Commit | Line | Data |
---|---|---|
01dc0eed | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
01dc0eed | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
01dc0eed | 5 | * |
01dc0eed JG |
6 | */ |
7 | ||
8 | #include <common/buffer-view.h> | |
9 | #include <common/dynamic-buffer.h> | |
01dc0eed JG |
10 | #include <common/error.h> |
11 | #include <assert.h> | |
12 | ||
b35aac84 JG |
13 | LTTNG_HIDDEN |
14 | struct lttng_buffer_view lttng_buffer_view_init( | |
15 | const char *src, size_t offset, ptrdiff_t len) | |
16 | { | |
17 | struct lttng_buffer_view view = { .data = src + offset, .size = len }; | |
18 | return view; | |
19 | } | |
20 | ||
ff28f865 | 21 | LTTNG_HIDDEN |
01dc0eed JG |
22 | struct lttng_buffer_view lttng_buffer_view_from_view( |
23 | const struct lttng_buffer_view *src, size_t offset, | |
24 | ptrdiff_t len) | |
25 | { | |
26 | struct lttng_buffer_view view = { .data = NULL, .size = 0 }; | |
27 | ||
28 | assert(src); | |
29 | ||
30 | if (offset > src->size) { | |
31 | ERR("Attempt to create buffer view with invalid offset"); | |
32 | goto end; | |
33 | } | |
34 | ||
35 | if (len != -1 && len > (src->size - offset)) { | |
36 | ERR("Attempt to create buffer view with invalid length"); | |
37 | goto end; | |
38 | } | |
39 | ||
40 | view.data = src->data + offset; | |
41 | view.size = len == -1 ? (src->size - offset) : len; | |
42 | end: | |
43 | return view; | |
44 | } | |
45 | ||
ff28f865 | 46 | LTTNG_HIDDEN |
01dc0eed JG |
47 | struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer( |
48 | const struct lttng_dynamic_buffer *src, size_t offset, | |
49 | ptrdiff_t len) | |
50 | { | |
51 | struct lttng_buffer_view view = { .data = NULL, .size = 0 }; | |
52 | ||
53 | assert(src); | |
54 | ||
55 | if (offset > src->size) { | |
56 | ERR("Attempt to create buffer view with invalid offset"); | |
57 | goto end; | |
58 | } | |
59 | ||
60 | if (len != -1 && len > (src->size - offset)) { | |
61 | ERR("Attempt to create buffer view with invalid length"); | |
62 | goto end; | |
63 | } | |
64 | ||
65 | view.data = src->data + offset; | |
66 | view.size = len == -1 ? (src->size - offset) : len; | |
67 | end: | |
68 | return view; | |
69 | } |